describe('disableClusteringAtZoom option', function () {
    /////////////////////////////
    // SETUP FOR EACH TEST
    /////////////////////////////
    var div, map, group, clock;

    beforeEach(function () {
        clock = sinon.useFakeTimers();

        div = document.createElement('div');
        div.style.width = '200px';
        div.style.height = '200px';
        document.body.appendChild(div);

        map = L.map(div, {maxZoom: 18, trackResize: false});

        // Corresponds to zoom level 8 for the above div dimensions.
        map.fitBounds(new L.LatLngBounds([
            [1, 1],
            [2, 2]
        ]));
    });

    afterEach(function () {
        group.clearLayers();
        map.removeLayer(group);
        map.remove();
        div.remove();
        clock.restore();

        div, map, group, clock = null;
    });

    /////////////////////////////
    // TESTS
    /////////////////////////////
    it('unclusters at zoom level equal or higher', function () {

        var maxZoom = 15;

        group = new L.MarkerClusterGroup({
            disableClusteringAtZoom: maxZoom
        });

        group.addLayers([
            new L.Marker([1.5, 1.5]),
            new L.Marker([1.5, 1.5])
        ]);
        map.addLayer(group);

        expect(group._maxZoom).to.equal(maxZoom - 1);

        expect(map._panes.markerPane.childNodes.length).to.equal(1); // 1 cluster.

        map.setZoom(14);
        clock.tick(1000);
        expect(map._panes.markerPane.childNodes.length).to.equal(1); // 1 cluster.

        map.setZoom(15);
        clock.tick(1000);
        expect(map._panes.markerPane.childNodes.length).to.equal(2); // 2 markers.
    });
});
